In this paper I examine Sigrid Nunez`s Mitz, an animal biography of Mitz who was Virginia and Leonard Woolf`s companion marmoset. Inspired by Flush, Virginia Woolf`s biography of the Victorian poetess Elizabeth Barrett Browning`s pet dog Flush, Nunez wittily portrays the Woolfs` life and interactions with pets, Pinka, Sally, and, above all, Mitz, during the mid-1930s in England. Nunez`s biography engages us in contemporary philosophical discourses concerning animals, via her imaginative reconstruction of the Woolfs` affinity toward their animal companions and their intimate contact with Mitz, in particular. In my view, Mitz is not simply a hilarious story of the Woolfs and their animals, or a skillful mimicry of Flush. Rather, it is a significant text that proposes how we can overcome the continuing Western tradition of human-animal dichotomization and move toward becoming-with-animal companions. Although we can trace the Woolfs` anthropomorphizing attitude toward animals, Nunez vividly conveys, through her poetic imagination, the actuality of individual subjectivity, friendship, suffering, and mortality within non/human animals. Through the very teetering of the Woolfs between essentializing the terms that blur the peculiar subjectivities between animals and recognizing individuation in the animal, Mitz uncovers the Woolfs` encounter with alterity in the animal. Thereby, this animal story does not merely give us a literary fantasy to widen our world to better embrace animals within our life, but leads us onto an ethics of care, calling upon our responsibilities for nonhuman species. (Chungnam National University)